Testing cyclone efficiency of the Electrolux UltraPerformer bagless canister vacuum cleaner.
It is single cyclone system and the foam filter gets dirty rather quickly. In the normal use, it isn’t so bad.
Still this video reveals the problem with the single cyclone separation.
In this video I used the fine dust, flour, some dog hair and rice.
For me this isn’t the problem, because my apartment is small and amount of dust I get is rather small.